It seems you're looking for a specific quote related to color symbolism in a literary context, perhaps from a book like "Lord of the Flies" by William Golding, where similar themes appear. While I cannot provide direct quotes from specific chapters or pages, I can guide you on how to find such quotes related to your description.
In "Lord of the Flies," Golding uses color symbolism throughout the novel. To support your point about dark colors representing violence and savagery, look for passages that describe the appearance of the "Lord of the Flies" or the painted faces of the boys, especially during moments of conflict or chaos.
A strong passage to consider would involve Simon’s encounter with the "Lord of the Flies," where the dark colors and imagery reflect the chaos and savagery that takes over the boys. These descriptions often highlight the deep reds, blacks, and earthy tones that you mentioned.
Review chapters where the boys paint their faces, or where the novel discusses the descent into savagery periodically to find quotes that resonate with your idea. This will emphasize the way color is used to symbolize deeper themes of civilization versus savagery.